[%c_highlight d4;keyPressed;none;opacity;0.8;square;d4;persistent;false,h4;keyPressed;none;opacity;0.8;square;h4;persistent;false] Suddenly, White has a bad position. There's no proper way to defend the d4-pawn, and the queen on h4 is out of play.
25. f5h6 [%c_effect h6;square;h6;type;Inaccuracy;persistent;true] 25... g8g7  26. h6g4  26... h7h5 [%c_effect h5;square;h5;type;GreatFind;persistent;true] 27. g4e3 